April weather forecast
Siquirres, Costa Rica

April, the same as March, is a moderately hot spring month in Siquirres, Costa Rica, with temperature in the range of an average high of 29.8°C (85.6°F) and an average low of 24.1°C (75.4°F).

Temperature

Siquirres's average high-temperature in April is a still warm 29.8°C (85.6°F), marking an insignificant difference from the 28.3°C (82.9°F) of March. Siquirres encounters a steady low-temperature average of 24.1°C (75.4°F) throughout the month of April.

Heat index

April's mean heat index is calculated to be a torrid 36°C (96.8°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Overheating risks increase with rising body temperatures, especially if heat release isn't efficient.

Humidity

April and September, with an average relative humidity of 76%, are the least humid months.

Rainfall

In April, in Siquirres, the rain falls for 16.3 days. Throughout April, 76mm (2.99") of precipitation is accumulated. In Siquirres, during the entire year, the rain falls for 224.1 days and collects up to 1644mm (64.72") of precipitation.

Daylight

In April, the average length of the day in Siquirres is 12h and 22min.
On the first day of April, sunrise is at 05:30 and sunset at 17:44. On the last day of the month, sunrise is at 05:16 and sunset at 17:45 CST.

Sunshine

In April, the average sunshine in Siquirres is 8.1h.

UV index

March through October, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 7 in April leads to these recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. During the period from 10 a.m. to 4 p.m., UV radiation is highest. Try to avoid direct sunlight during these hours. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.